diff --git a/hutool-core/src/test/java/cn/hutool/core/stream/CollectorUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/stream/CollectorUtilTest.java
index 72e943cf5..570478082 100644
--- a/hutool-core/src/test/java/cn/hutool/core/stream/CollectorUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/stream/CollectorUtilTest.java
@@ -20,7 +20,7 @@ public class CollectorUtilTest {
 
 	@Test
 	public void reduceListMapTest() {
-		Set<Map<String, Integer>> nameScoreMapList = StreamUtil.of(
+		final Set<Map<String, Integer>> nameScoreMapList = StreamUtil.of(
 				// 集合内的第一个map，包含两个key value
 				MapUtil.builder("苏格拉底", 1).put("特拉叙马霍斯", 3).build(),
 				MapUtil.of("苏格拉底", 2),
@@ -28,7 +28,7 @@ public class CollectorUtilTest {
 				MapUtil.of("特拉叙马霍斯", 2)
 		).collect(Collectors.toSet());
 		// 执行聚合
-		Map<String, List<Integer>> nameScoresMap = nameScoreMapList.stream().collect(CollectorUtil.reduceListMap());
+		final Map<String, List<Integer>> nameScoresMap = nameScoreMapList.stream().collect(CollectorUtil.reduceListMap());
 
 		Assert.assertEquals(MapUtil.builder("苏格拉底", Arrays.asList(1, 2))
 						.put("特拉叙马霍斯", Arrays.asList(3, 1, 2)).build(),